Safety razor



Sept 3, 1929- I H. J. GAISMAN 17,727,167

SAFETY RAZOR Filed lJuly 9, 1927 i um . ffy

0 1 9 20 l l (A ATTORNEY Patented Sept. 3, 1929.

UNETED STATES PATENT HENRY J. GAisMAN, on Nnw YORK, N. Y., AssIGNoR To .entrer-:rante Bananas oon- ,Y

PORATION, or DOVER, DELAWARE, A CORPORATION on nan-swans.

SAFETY RAZOR.

Application filed July 9, 1927. Serial No. 204,439.

My invention relates to improvements in the class of razors in which ablade holder and blade are rocked for stropping the blade edge.

An object of my invention is to provide a safety razor including two frames slidable relatively one to another in the direction of reciprocation of the razor along a strop, a blade holder pivotally carried by one frame, means cooperative between the blade holder and alframe for rocking the blade holder and blade by reason of movement of one frame relatively to the other for sharpening the blade edge on a strop and for raising the blade edge from the strop at the initiation' of reverse reciprocating motions of the razor along the strop, a guard for the blade edge, and means to retain the two frames in a set position and the guard in shaving relation to the blade for shaving purposes.

My invention comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawingsforming a part hereof, where- Fig. 1 isa partly broken perspective view of a safety razor embodying my invention;

Fig. 2 is a partly sectional front viewk of the razor showing parts in a dierent position from Fig'. 1;

Fig, 3 is a section on line 3, 3, in Fig. 2;

Fig. 4 is a detail section substantially on line 4, 4, in Fig. 5;

Fig. 5 is a perspective detail of the blade holder and blade;

Figs. 6 and 7 are side views illustrating different stropping positions of the razor;

. Fig. 8 is a sectional view, and

Fig. 9 is a sectional view illustrating a modification.

Similar numerals of reference indicate corresponding parts in the several views.

The main frame 1 may be of any suitable construction being shown comprising a base 1a and spaced uprights 1b, a suitable handle or support 2 being secured to a base 1a in any desired or well known way, such as by screw threads at 3. Within vframe 1 is a second frame 4 mounted to slide relatively to frame 1, the frame 4 illustrated compris'- ing abase 4a having spaced uprights 4b. The frame 4 is shown located within the frame 1 with the uprights 4b between the uprights 1b and slidably cooperative therewith, whereby the frames are retained in relatively operative positions. The frame 4 is provided with spaced strop-tensioning' means illustrated in the form of shafts k5 supported by the'uprights 4b and 'irovidcd with hollow sleeves 5a through which the shafts 5 pass and interposed4 between the upright-s 4l. One of the shafts 5 at its ends extends outwardly beyond the uprights 4b into slots 6 longitudinally disposed in the uprights 1b of frame l, whereby when frame 4 slides relativelyto frame 1 the shaft 5 and slots 6 will guide frame 4. The frame 4 is also provided with additional strop engaging means shown comprising a shaft 7 journaled between the uprights 4l of frame 4 yand passingl through a tnbularshalt or sleeve 7l which is located between lthe uprights 4b. The ends of shaft l' are slidable in corresponding longitudinal slots 9 in the uprights 4b for guiding frame 4 relatively tol frame 1. lVhen a strop S) is passed through the frames it will engage the strop tensioning means, (Figs. 6 and 7). so "hat when the razor is reciprocated alone; the strop the frame 4 will be temporarily retained in position on the strop*V and trame 1 will move along the strop relative to frame 4 until stopped by the engagement of shafts 5 and 7, with the metal at the corresponding end of the respective slots 6 or 8, so that during further movement et the razor along the strop the twoframes willl slide together. Each time that the reciprocating motion of the razor is reversed along the strop the relative movement of one frame with respect to the other will. oc-

cur.

A blade holder is movably carried by thev frame 4, being shown pivotally supported upon the uprights 4b by means of pivots ,1.0 secured to ears 11L extending laterally from blade holder 11. The blade holder is shown in plate-like form provided at one end with aV stationary jaw llbvto receive one ef or" blade 12 that is laid against the member and with a pivotal jaw 13 at the opposite edge to-receive the adjacent edge 'of the blade.

Jaw 11b may be made by folding the metall at the adjacent end of the blade holder` plate, (Fig. 4), and jaw 18 may be made by foldinga strip of metal adapted to clamp the adjacent edge of the blade Vbolder plate and the blade, a pivot at 13a pivotally connecting said jaw with the plate. The blade holder plate is shown provided with spaced pins or projections 14 adapt-ed to pass through corresponding openings 12a in the blade to leep the blade :trom shifting on the blade holder. Pivots carry gears 15 shown located on the outer sides of the uprights db and in mesh with racks 16 on the upper edges ot the uprights 1l of frame 1. The relative arrangement ot the gears and racks is such that when the two trames 1 and 4 move relatively to one another the engagement ot the gears with the racks will cause the blade holder' with'the blade to be rocked or rotated back and forth to present the opposite sides of the blade edge to the strop for sharpening such'edges.

When the strop is passed through the razor, (as indicated in Figs. 6 and 7), and the razor is moved to the right in Fig. 6, (the strop being held taut), the racks 16 will cause operation ot gears to press the blade edge against the strop, and the blade edge will be dragged along the strop tor sharpening the edges, 6). dit the termination of the stroke the trame 1 will be moved-in the reverse direction and trame 1 will be temporarily retained by the strop, and such movement ot trame 1 will cause the racks 16 to operate the gears 15 and rock or rotate the blade holder and the blade from the position shown' in Fig. 6 to reverse the position of lthe blade edge upon the strop, as in Fig. 7, and continued movement of the razor to the lett will cause the blade edge to drag along the strop for sharpening it. It will be understood that each time the trame 1 has moved independently of trame 4, and the blade holder with they blade has been rocked appropriately, the metal atthe ends of the slots 6 and 8, by engagement with the shafts 5, 7, will cause the :trame i to be pulled alongI the strop in a correspond-` ing direction. At the initiation of each reverse stroke or reciprocation ot frame 1 the movement of the racks 16 independently oit movement ot the temporarily retained frame 4 will cause the blade edge to be raised from the strop before frame f1 slides to prevent the blade from cutting thestrop.

A guard tor the blade edge is indicated t 17 which may be of any usual or desired cnstruction. Said guard in Figs. 1 to 8 is shown carried by 'frame 1. Arms 18 are pivotally supported by iframe 1 at 19 upon projections 20 from said frame. The arms 18 are provided with blade stops, shown in the form ot hooks at 18a, adapted to engage the edge portion ot' the blade to retain the latter in shaving relation to the guard. At opposite ends 18b the arms 18 are relatively attenuated so as to have spring action and are adapted to be engaged by projections 21:L that extend, in a cam-like manner, from the opposite end portions ot a movable member 21 that is pivotally supported at 22 upon trame 1 at t-he side opposite the guard. The member 21 isshown in yoke-like form (Fig. 1), and provided with a finger piece 21h ladapted to be operated tor rocking said member and its projections 21a. When the blade is to be retained respecting the guard tor shavi Ag, the blade is laid against the guard and the member 21 is rocked to cause its projections to engage the portions 18b of arms 18 to cause engagement of the blade stops 18 with the blade and the tinger piece 21b will engage the adjacent strop-tensioning member 5, whereby the member 21 will retain the blade stops against the blade, as indicated in Figs. 1 and 3. The flexibility ot the portions 18h ot the arms 18 will enable the stops 18a to resiliently engage the blade edge and retain the same with the blade pushed against the pins 14E. When the blade edge is to be stropped the member 21 will be swung, as indicated in Figs' andV 7, to release the projections 21a from the arms 18, whereupon the blade stops may be swung away Ytrom the blade edge and the blade will be released t'or stropping.

ln case a blade should be substituted for an authorized blade and be provided with openings 12"L that are considerably larger than the pins 141 thc movement of the arms 18, by reason ot the projections 21a, vwill cause the blade stops 18a to engage the blade and push .it rearwardly so that the blade edge will be pushed too far back from vthe guard for shaving, as indicated in Fig. 8.

In the form shown inA Fig. .9 the guard 17 is carried by the frame 1 and projections 20 extend from frame 1,*to which projections tThe arms 18 are pivoted at 19. Projections 21"L oiE member 21, as previously de scribed, will engage the portions 18b of arms 18 to cause the blade stops 18a to engage the blade edge.

VhileI have set forth two racks 16 on trame 1 and two gears 15V operative with said racks, it will be understood, that one rack and a corresponding gear may be used preferred. Also, that my invention is rnot limited to the details of construction set forth, as thefsame may be varied, within the scope of the appended claims, without departing from the spirit ot my invention.

flaving now described my invention what 1 claim is Y 1. A safety razor comprising a frame provided with a stationary rack, a second trame slidable relatively to the first named ltrame and rack, the second frame having strop-tensioning means, a blade holder pivotally carried by the second Jframe and pro- `vided with agear cooperative with said rack for rocking the blade holder during movement ot one frame relative `to the other and relative to the rack, a guard for a.. blade edge carried by one of said frames, and meansto retain the blade in shaving relation to the guard.

2. A safety razor as set forth in claim 1, including means to retain the frames in set position when the blade is in shaving relation to the guard.

3. A safety razor as set forth in claim l, in which the means to 'retain the blade in shaving relation to the guard includes pivotally supported arms provided With blade engaging means, and a movable member cooperative With said arms to retain the blade engaging means in cooperation With the blade.

4. A safety razor as set forth in claim 1, including pivotally supported arms provided with blade engaging means, and a member movably carried by one of the iframes and having means cooperative with said arms for retaining the blade engaging means in cooperation with the blade and retaining the frames in set position to retain the blade in shaving relationk to the guard.

5. A safety razor as set forth in claim l, in which the means to retain the blade in shaving relation to the guard includes pivotally supported armsg provided with blade engaging means, and a member pivotally carried by one of the frames and provided with projections respectively cooperative with said. arms to retain the blade engaging means in cooperation with the blade and retain the frames in set position to retain the blade in shaving relation to the guard.

6. A safety razor as set forth in claim 1, in which the means to retain the blade in shaving relation to the guard includes pivotally supported arms having blade engaging means, portions of Which arms are resilient, and a member pivotally carriedl by y the second frame and provided With projections respectively cooperative with said arms to retain the blade engaging means in cooperation with the blade and retain the frames in set position to retain the blade in shaving relation to the guard.

7. A safety razor comprising a. frame provided With a rack, a second frame slidable relatively to the first named frame, the second frame having strop-tensioning means, a blade holder pivotally carried by the second frame and provided With a gear cooperative with said rack for rocking the blade holder during movement of one frame relative to the other, a guard for a blade edge carried by one of said frames, arms pivotally carried by the other frame and provided with means to engage a blade to retain it in shaving relation to the guard, and a member movably carried by the second frame and cooperative with said arms for retaining the blade engaging means in cooperation with the blade to retain the latter in shaving relation to the guard.

8. A safety razor comprising a frame provided With a stationary rack and having longitudinally disposed slots, a second frame slidable relatively to the first named frame and the rack, the second frame having strop-tensioning means, part of which means is operative in said slots, a blade holder pivotally carriedA by the second frame and provided with a gear cooperative with said rack for rocking the blade holder during movement of one frame relatively to the other and relative to the rack, a guard for a blade vedge carried by one of said frames, and means to retain the blade in shaving relation to the guard.

9. A safety razor comprising a frame hav- .ing aL base and spaced uprights, said uprights having spaced longitudinal slots, a second frame operative Within the first named frame and provided With strop-tensioning means, part of which means is operative in said slots for slidably guiding one frame With relation to the other, the first named frame having a rack, a blade holder pivotally carried by the second frame and provided with a gear in mesh with said raclr, a guard carried by one of the frames, and means to retain a blade in shaving relation to the guard.

10. A safety razor as set forth in claim 9, in Which the means to retain the blade in shaving relation to the guard includes arms pivotally supported on one of the frames and provided with means to engage a blade to retain it in shaving relation to the guard, and a member pivotally supported on the other frame and provided with projections to engage the arms to cause the blade retaining means to retain the blade With respect to the guard for retaining theframes in corresponding position HENRY J. GAISMAN. 

